To adjust for the changing (dropping) voltage of the internal battery, so you can still get accurate readings. When you can no longer adjust to zero, replace the battery(s).
You check and adjust instrument zero and, if you are measuring ohms, you also check and adjust ohms zero.
Zero to 100 ohms.
No, an open resistor has a value of infinity. An open resistor typically will measure over 900 Megohms. A zero ohm resistor is exactly that, and will measure zero ohms. They are typically surface-mount devices.
As close to zero ohms as makes no difference.Zero, or close to it. It should be nearly the same as if you touch the probes together.
Set a Volt-Ohm meter to Ohms and put the two leads from meter across the fuse. One on each end where the metal is located. The meter should read zero ohms if the fuse is NOT blown.
You check and adjust instrument zero and, if you are measuring ohms, you also check and adjust ohms zero.
Test Prod Scale meter Zero corrector Zero Ohms adjust Scale selector
check the batteries
The lowest resistance is zero ohms.
Set it to infinite which may be a sideways 8. When you touch the leads the needle should swing to zero. If it comes to rest on a different number such as 10 then change the batteries. If it continues to give the same reading then you may need to replace it.
A short circuit is an unexpected path of zero resistance between two nodes in a circuit. If you measure the resistance of a resistor, and find that is has zero ohms, but the resistor is supposed to be somthing else, such as 100 ohms, then you can conclude that the resistor is shorted. Keep in mind that the precision of the measurement might be critical. If the resistor is supposed to be 100 ohms, but you get zero ohms, then the answer is easy. If the resistor is 0.001 ohms, but you get zero ohms, then you have to consider the precision of the measurement, the resistance of the wires, etc.
yes
No. A short circuit would be zero ohms.
Zero to 100 ohms.
No, an open resistor has a value of infinity. An open resistor typically will measure over 900 Megohms. A zero ohm resistor is exactly that, and will measure zero ohms. They are typically surface-mount devices.
M (usually as a capital) million. As "m" strictly is a thousandth (as in mm=millimetre), but I've never seen it for that purpose.
The grounding system of a distribution must be from zero ohms to a maximum of two ohms. This is usually obtained by bonding all metallic parts back to the distribution centre with a wire capable of handling the circuits fault current if the circuit should ground out. The ground wire in cable sets is used for this purpose.